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V4L/DVB (10819): gspca: Don't need to zero ioctl parameter fields

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The v4l2 core code in v4l2_ioctl will zero out the structure the driver is
supposed to fill in for read-only ioctls.  For read/write ioctls, all the
fields which aren't supplied from userspace will be zeroed out.

Zeroing code is removed from g_audio, enum_input, g_parm and gmbuf.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Trent Piepho 2009-03-04 01:21:03 -03:00 committed by Mauro Carvalho Chehab
parent 3836725518
commit c6a976e44e
1 changed files with 0 additions and 4 deletions
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4
drivers/media/video/gspca/gspca.c
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@ -1099,7 +1099,6 @@ static int vidioc_s_audio(struct file *file, void *priv,
static int vidioc_g_audio(struct file *file, void *priv,
struct v4l2_audio *audio)
{
memset(audio, 0, sizeof *audio);
strcpy(audio->name, "Microphone");
return 0;
}
@ -1133,7 +1132,6 @@ static int vidioc_enum_input(struct file *file, void *priv,
if (input->index != 0)
return -EINVAL;
memset(input, 0, sizeof *input);
input->type = V4L2_INPUT_TYPE_CAMERA;
strncpy(input->name, gspca_dev->sd_desc->name,
sizeof input->name);
@ -1341,7 +1339,6 @@ static int vidioc_g_parm(struct file *filp, void *priv,
{
struct gspca_dev *gspca_dev = priv;
memset(parm, 0, sizeof *parm);
parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
parm->parm.capture.readbuffers = gspca_dev->nbufread;
@ -1411,7 +1408,6 @@ static int vidiocgmbuf(struct file *file, void *priv,
{
struct v4l2_format fmt;
memset(&fmt, 0, sizeof fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
i = gspca_dev->cam.nmodes - 1; /* highest mode */
fmt.fmt.pix.width = gspca_dev->cam.cam_mode[i].width;